Neco 2021 Agricultural Science Question 25
Practice objective / multiple choice question 25 from the 2021 Neco Agricultural Science examination.
A soil test for a \(3\)-ha maize field shows nutrient deficiencies of nitrogen \(120\) kg ha⁻¹, phosphorus (as P₂O₅) \(60\) kg ha⁻¹ and potassium (as K₂O) \(80\) kg ha⁻¹. The farmer intends to use a compound fertilizer labelled 20‑10‑10 (percent by weight of N‑P₂O₅‑K₂O). (i) Determine the amount of this fertilizer (in kg) that should be applied per hectare to meet exactly the nitrogen requirement. (ii) Calculate the total cost for the whole 3‑ha field if the fertilizer costs \(₦45\) per kg. (iii) State whether any nutrient will be in excess or deficient after this application, and by how many kilograms per hectare.
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About This Question
This is Neco 2021 Agricultural Science Question 25. It is one of the objective questions from the 2021 Neco Agricultural Science examination.
Difficulty level: Medium .
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